<!DOCTYPE html>
<html lang="zh">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        body {
            width: 540px;
            text-align: center;
            margin: 200px auto;
            background-color: yellow;
        }

        .div1 {
            height: 30px;
            width: 270px;
        }

        .lf {
            float: left;
        }

        .rf {
            float: right;
        }

        .mb-10 {
            margin-bottom: 10px;
        }

        .ml-10 {
            margin-left: 10px;
        }

        .mr-10 {
            margin-right: 10px;
        }

        .mt-10 {
            margin-top: 10px;
        }

        .brb {
            background-color: blue;
        }

        .bcr {
            background-color: red;
        }

        .bcy {
            background-color: rgb(28, 81, 137);
        }

        .bbb {
            background-color: aquamarine;
        }

        .oiu {
            background-color: blanchedalmond;
        }

        .float1 {
            height: 610px;
            width: 100px;
        }

        .float2 {
            height: 300px;
            width: 100px;
        }

        .float3 {
            height: 145px;
            width: 100px;
        }
    </style>
</head>

<body>
    <div class="lf div1 bbb mb-10">智能穿戴</div>
    <div class="rf div1 oiu mb-10">耳机|穿戴</div>
    <div class="">
        <div class="float1 lf bcy mr-10"></div>
        <div class="float2 lf brb mb-10 mr-10"></div>
        <div class="float2 lf bcr mb-10 mr-10"></div>
        <div class="float2 lf brb mb-10 mr-10"></div>
        <div class="float2 lf bcr mb-10"></div>
        <div class="float2 lf bcr mr-10"></div>
        <div class="float2 lf brb mr-10"></div>
        <div class="float2 lf bcr mr-10"></div>
        <div class="float3 lf brb mb-10"></div>
        <div class="float3 lf bcy"></div>
    </div>

</body>

</html>